Re: TCP connection
¿ªÔÆÌåÓýSkySafari also has an option to enable logging. ?You can turn that on to capture logs and see if it provides you more info. ? ?Sky Safari retries commands several times before it gives up. ?You'll notice that in Sky Safari you can adjust the "readout rate" (how often it asks the mount to report it's RA & Dec position) and you can also adjust the timeout. The Gemini I is notoriously bad about responding to queries while it is still completing a slew. ?The Gemini II is better at this. ? But you might reduce the readout rate and increase the timeout values to see if those adjustments help.? Regarding TCP vs UDP... UDP is connectionless. ?It works a bit like a radio station in that it transmits packets but there is nothing inherent to UDP that guarantees that a packet (frame) was received on the other end. ?Any error detection/correction protocols would have to be implemented in the application. TCP is connection oriented. ?Once a connection is established, delivery is basically assured *or* you'll know about it -- because the ability to detect and retransmit missing packets is built into the protocol. ?The application doesn't need to worry about dealing with error detection & correction. Both TCP and UDP ride on top of the IP layer ... there is no discernible advantage with respect to things like speed, etc. ?using one over the other. That aside ... while it sounds like TCP would be the better choice, according to Rene, UDP is preferred in the case of the Gemini. ?Apparently more work was spent making sure UDP works and perhaps the TCP stack on the Gemini isn't as solid. Clear skies, Tim On May 20, 2020, at 5:43 PM, Brian Valente <bvalente@...> wrote:
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Timothy Campbell